问题:
A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them.
A.face
B.facing
C.faced
D.are facing
A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them.
A.face | B.facing | C.faced | D.are facing |
参考答案: